JPS6313246Y2 - - Google Patents
Info
- Publication number
- JPS6313246Y2 JPS6313246Y2 JP8147582U JP8147582U JPS6313246Y2 JP S6313246 Y2 JPS6313246 Y2 JP S6313246Y2 JP 8147582 U JP8147582 U JP 8147582U JP 8147582 U JP8147582 U JP 8147582U JP S6313246 Y2 JPS6313246 Y2 JP S6313246Y2
- Authority
- JP
- Japan
- Prior art keywords
- propulsion
- magnetic detector
- current
- propulsion shaft
- ammeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000013535 sea water Substances 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000004210 cathodic protection Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は、船舶推進翼の電気防食装置における
推進軸接地回路に関するものである。[Detailed Description of the Invention] The present invention relates to a propulsion shaft grounding circuit in a cathodic protection device for marine vessel propulsion blades.
海水を介して推進翼に防食電流を流す電気防食
装置にあつては、推進翼の防食性能を左右する大
きな要素として、推進軸と船体外板間の接地回路
における集電効果に依存しており、この集電効果
を測定する手段として、従来はシヤント型電流計
が用いられていた。 In the case of electrolytic protection devices that apply anti-corrosion current to the propulsion blades through seawater, a major factor that influences the corrosion protection performance of the propulsion blades is the current collection effect in the ground circuit between the propulsion shaft and the hull outer plate. Conventionally, a shunt-type ammeter has been used as a means to measure this current collection effect.
このシヤント型電流計は、シヤント自体の抵抗
が大きため、前記接地回路における集電効果を著
しく減少させていたことが、本考案者等の実験研
究により知見された。 It was discovered through experimental research by the present inventors that in this shunt type ammeter, the resistance of the shunt itself is large, so that the current collection effect in the grounding circuit is significantly reduced.
本考案は、かくの如き従来の欠点を除去すべく
開発したものであつて、その実施例を図面に基づ
き以下に説明する。 The present invention was developed to eliminate the above-mentioned drawbacks of the conventional technology, and embodiments thereof will be described below with reference to the drawings.
図に示す如く、船体外板１に設けられた陽極２
から海水３を介して推進翼４に防食電流５を流す
電気防食装置において、推進軸６と船体外板１間
の接地回路７に磁気検出器８を設け、この磁気検
出器８に電流計９を接続したのである。 As shown in the figure, an anode 2 provided on the hull outer plate 1
In a cathodic protection device that flows an anticorrosion current 5 to a propulsion blade 4 through seawater 3, a magnetic detector 8 is provided in the grounding circuit 7 between the propulsion shaft 6 and the hull outer plate 1, and an ammeter 9 is connected to the magnetic detector 8. I connected it.
前記磁気検出器８は、従来のシヤントと異な
り、接地回路７に流れる電流によつて引き起こさ
れる磁力の大きさを電気的に無接触で電流に変換
するので、前記接地回路７における集電効果を全
く阻害することがない。 Unlike conventional shunts, the magnetic detector 8 converts the magnitude of the magnetic force caused by the current flowing through the ground circuit 7 into a current without electrical contact, so it reduces the current collection effect in the ground circuit 7. There is no obstruction at all.
図は本考案の実施例を示す説明図である。
１……船体外板、２……陽極、３……海水、４
……推進翼、５……防食電流、６……推進軸、７
……接地回路、８……磁気検出器、９……電流
計。
The figure is an explanatory diagram showing an embodiment of the present invention. 1... Hull outer plate, 2... Anode, 3... Seawater, 4
... Propulsion blade, 5 ... Anti-corrosion current, 6 ... Propulsion shaft, 7
...Grounding circuit, 8...Magnetic detector, 9...Ammeter.
Claims (1)
装置において、推進軸と船体外板間の接地回路に
磁気検出器を設け、この磁気検出器に電流計を接
続して成る船舶推進翼の電気防食装置における推
進軸接地回路。 In an electrolytic protection system that supplies anti-corrosion current to the propulsion blades through seawater, a magnetic detector is installed in the ground circuit between the propulsion shaft and the hull shell, and an ammeter is connected to this magnetic detector. Propulsion shaft grounding circuit in corrosion protection equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8147582U JPS58184563U (en) | 1982-05-31 | 1982-05-31 | Propulsion shaft grounding circuit in cathodic protection equipment for ship propulsion blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8147582U JPS58184563U (en) | 1982-05-31 | 1982-05-31 | Propulsion shaft grounding circuit in cathodic protection equipment for ship propulsion blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58184563U JPS58184563U (en) | 1983-12-08 |
| JPS6313246Y2 true JPS6313246Y2 (en) | 1988-04-14 |
Family
ID=30090578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8147582U Granted JPS58184563U (en) | 1982-05-31 | 1982-05-31 | Propulsion shaft grounding circuit in cathodic protection equipment for ship propulsion blades |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58184563U (en) |
-
1982
- 1982-05-31 JP JP8147582U patent/JPS58184563U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58184563U (en) | 1983-12-08 |
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